UK design student Richard Sweeney creates impossible shapes. And he does so with paper.

Whereas most of us struggle to even pronounce words like icosahedron (a polyhedron with 20 faces), dodecahedron (a polyhedron with 12 faces) and tetrahedron (a polyhedron with four triangular faces, three of which meet at each vertex), Richard cuts, scores and fold paper to create gorgeous renditions of these, and many other, mind-twisting forms.

See the amazing results in his flickr photos. Also check out his site and his blog on art, design, science and origami - a beautiful combination of interests.

Also, perhaps another up-and-comer in the paper crafts world: Infinite Origami is a 13-year-old homeschooled boy who uses math and origami create amazingly complex tessellations. Check out photos of his work here.